package com.itheima.controller;

import com.itheima.pojo.Result;
import com.itheima.pojo.User;
import com.itheima.service.UserService;
import com.itheima.utils.JwtUtil;
import com.itheima.utils.Md5Util;
import com.itheima.utils.ThreadLocalUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import javax.validation.constraints.Pattern;
import java.util.HashMap;
import java.util.Map;

@RestController
@Validated
@RequestMapping("/user")
public class UserController {
    @Autowired
    private UserService userService;

    @PostMapping("/register")
    public Result register(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$") String password) {
        //查询用户
        User u = userService.findByUsername(username);
        if (u == null) {
            //没有占用
            //注册
            userService.register(username, password);
            return Result.success();
        } else {
            //占用
            return Result.error("用户名已被占用");
        }
    }

    @PostMapping("/login")
    public Result<String> login(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$") String password) {
        //根据用户名查询用户
        User loginUser = userService.findByUsername(username);
        //判断该用户是否存在
         if (loginUser == null){
             return Result.error("用户名错误");
         }
        //判断密码是否正确 loginUser对象中的password是密文
        if (Md5Util.getMD5String(password).equals(loginUser.getPassword())){
            //登陆成功
            Map<String,Object> claims = new HashMap<>();
            claims.put("id",loginUser.getId());
            claims.put("username",loginUser.getUsername());
            String token = JwtUtil.genToken(claims);
            return Result.success(token);
        }
        return Result.error("密码错误");
    }
    @GetMapping("/userInfo")
    public Result<User> userInfo(){
       /* //根据用户名查询用户
        Map<String, Object> map = JwtUtil.parseToken(token);
        String username = (String) map.get("username");*/
        Map<String,Object> map = ThreadLocalUtil.get();
        String username =(String) map.get("username");
        User user = userService.findByUsername(username);
        return Result.success(user);
    }
    @PutMapping("/update")
    public Result update(@RequestBody User user){
     userService.update(user);
     return Result.success();
    }
    @PatchMapping("updateAvatar")
    public Result updateAvatar(@RequestParam String avatarUrl){
     userService.updateAvatar(avatarUrl);
     return Result.success();
    }
    @PatchMapping("updatePwd")
    public Result updatePWD(@RequestBody Map<String,String> params){
    //校验参数
        String oldPwd = params.get("old_pwd");
        String newPwd = params.get("new_pwd");
        String rePwd = params.get("re_pwd");
        if (!StringUtils.hasLength(oldPwd) || !StringUtils.hasLength(newPwd) || !StringUtils.hasLength(rePwd)){
            return Result.error("缺少必要的参数");
        }
        //原密码是否正确
        //调用UserService根据用户名拿到原密码，再和old_pwd比对
         Map<String, Object> map= ThreadLocalUtil.get();
         String username =(String) map.get("username");
        User loginUser = userService.findByUsername(username);
        if (loginUser.getPassword().equals(Md5Util.getMD5String(oldPwd))){
          return Result.error("原密码填写不确认");
        }
        //newPwd和rePwd是否一样
        if (!rePwd.equals(newPwd)){
            return Result.error("两次填写的新密码不一样");
        }
        userService.updatePwd(newPwd);{
            return Result.success();
        }
        //调用service完成密码更新

    }
}